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I am doing a project on strain gauges. I have the thing set up in a half-wheatstone bridge. Using a pair of strain gauges I am trying to measure the weight!(attaching each one to a side of a ruler/cantilever and bending it by attaching weight to the end)
So here's a confusing bit. I no when the gauges are unstrained the reading on the bridge shud be ZERO(i.e bridge is balanced) I'm measuring the voltage difference across the bridge not current. The point is when i bend them i get a reading(which i shud)
Am i correct in assuming that the resistance difference across the bridge when i bend it. This will b recorded as a voltage change?
SO here's a question. If i bend it more the resistance difference should b greater so should i get a bigger reading (voltmeter) on the scales or not??
I no the explanation isn't a perfect . PLease bear with me.
So here's a confusing bit. I no when the gauges are unstrained the reading on the bridge shud be ZERO(i.e bridge is balanced) I'm measuring the voltage difference across the bridge not current. The point is when i bend them i get a reading(which i shud)
Am i correct in assuming that the resistance difference across the bridge when i bend it. This will b recorded as a voltage change?
SO here's a question. If i bend it more the resistance difference should b greater so should i get a bigger reading (voltmeter) on the scales or not??
I no the explanation isn't a perfect . PLease bear with me.